#
#  Copyright 2019 The FATE Authors. All Rights Reserved.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.


def load_metric_handler(writer):
    from fate.components.core.component_desc._metric import (
        ComponentMetricsFileHandler,
        ComponentMetricsRestfulHandler,
        JsonMetricFileWriter,
        JsonMetricRestfulWriter,
    )

    if isinstance(writer, JsonMetricRestfulWriter):
        return ComponentMetricsRestfulHandler(writer=writer)
    elif isinstance(writer, JsonMetricFileWriter):
        return ComponentMetricsFileHandler(writer=writer)
    else:
        raise ValueError(f"writer `{writer}` not allowed")
